Siddharth Mathur, MD
NPI 1578728986ActiveIndividual· Internal Medicine, Gastroenterology· Crystal River, FL
Internal Medicine, Gastroenterology (MD) with Bikkasani Ram Hellstern and Chandrupatla Mdpa, practicing in Crystal River, Florida. Their prescriptions cost Medicare Part D more than their services did: $524,001 for 1,929 claims, against $322,900 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 19 companies reporting payments in 2025, $20,048 in all, mostly speaking and faculty fees. Lists HCA Florida Citrus Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1578728986 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 24, 2008 |
| Last updated in NPPES | Feb 18, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | ME112492 | FL |
| Internal Medicine | 207R00000X | 003163 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 893 |
|---|---|
| Services billed | 3,737 across 45 procedure codes |
| Paid by Medicare | $322,900 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,929 · 3,604 30-day fills |
|---|---|
| Patients | 916 |
| Total drug cost | $524,001 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Bikkasani Ram Hellstern and Chandrupatla MdpaCrystal River, FL · 12 clinicians
Hospital affiliations
- HCA Florida Citrus HospitalInverness, FL
- Tampa General Hospital Crystal RiverCrystal River, FL
Industry payments (Open Payments)
- 2025$20,048 · 98 payments from 19 companies
- 2024$76,704 · 185 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $18,024 | 30 |
| Janssen Biotech, Inc. | $558.17 | 14 |
| Abbvie Inc. | $374.43 | 19 |
| Ipsen Biopharmaceuticals, Inc | $296.40 | 7 |
| Intercept Pharmaceuticals, Inc. | $158.18 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$15,050 · 8 payments
- Food and Beverage$2,848 · 86 payments
- Travel and Lodging$2,150 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Crystal River
- 1003199076
- 1366651531
- 1063440139
- 1881623767
- 1649207036
- 1639572134
- 1699158915
- 1861832438
- 1346272549
- 1073558862
- 1437425790
- 1740220938
All Internal Medicine, Gastroenterology providers in Florida →